Ebay won't do anything because you voluntarily closed the case.
You can't open another one and, as far as Ebay are concerned, you have come to a resolution with the seller.
Depending on how long ago you placed the order, and how you paid, you might be able to open a chargeback through your payment provider.
Don't delay. Start that process today.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)